Approximately how much of the ozone layer over the South Pole has been depleted? Select one: a. 25% b. 50% c. 75% d. 90%

What is dangerous about ephemeral streams?

Which statement supports the giant impact theory for the formation of the Moon? A. Earth and the Moon share many compositional characteristics. B. Earth and the Moon have the same sized core. C.

Which of the following is an example of imperialism without colonialism? A territory is claimed by the Belgian king, and forced labor is used to extract the mineral wealth for Belgium.

In the past 100 years the average temperature in the United States has increased by a. an amount too small to measure. c. 10°C. b. 2°C. d. 20°C.

How did the Arabian peninsula establish trade routes

What is the biggest problem facing the Chesapeake Bay and Puget Sound?

What aspects of Latin American culture have most been influenced by the European colonization of the past?

Two different species of organism occupy the same niche. Which of the following scenarios will occur? a. The two species will live in harmony. b. One species will out compete the other species. c.

Sort the characteristics based on whether they describe mass wasting, tsunamis, or both. 1. It can be triggered by tectonic plate movement. 2. The name means "harbor wave." 3. It's movement of land triggered by gravity. 4.

Some students confuse adaptation with adapting. Clarify the misconception.